QNAP
QNAP TS-433-4G-44S-US 4-Bay 12TB NAS - Seagate IronWolf RAID 5 Bundle
★★★★★
4 GB DDR4
Pre-configured RAID 5 NAS with 12TB usable storage ships ready to protect and serve your data on day one.
$729.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
Four 4TB Seagate Iron Wolf Drives Pre-Installed and Pre-Configured with RAID 5. Hassle-free!
IronWolf drives include a robust three- year Rescue Data Recovery Services plan.
ARM Cortex-A55 quad-core 2.0GHz processor with 4 GB DDR4 RAM
Budget-friendly Home NAS for file storage and multimedia streaming
Centrally store and organize personal or family photos, music, and videos
Mitigate the threat of ransomware with QNAP's storage snapshot technology
Effortlessly backup your Windows Computers with QNAP’s NetBak Replicator software and Mac computers with Time Machine
Securely access your Files from anywhere with MyQNAPCloud
Specifications
Model
QNAP TS-433-4G
Drive Bays
4
Included Drives
4 × 4TB Seagate IronWolf
Total Raw Capacity
16TB
Usable Capacity (RAID 5)
~12TB
Processor
ARM Cortex-A55 quad-core, 2.0GHz
RAM
4GB DDR4
Network Interface
1× Gigabit Ethernet
RAID Support
RAID 5 (pre-configured)
Drive Warranty
3-year Seagate Rescue Data Recovery Services
Pros & Cons
👍 Pros
- RAID 5 pre-configuration delivers approximately 12TB usable capacity with single-drive failure tolerance — no setup required out of the box.
- ARM Cortex-A55 quad-core at 2.0GHz with 4GB DDR4 handles concurrent backup jobs, file serving, and multimedia streaming without thrashing memory.
- Seagate IronWolf drives include a three-year Rescue Data Recovery Services plan — a meaningful insurance policy for a home or small-office deployment.
- QNAP QTS snapshot technology provides ransomware recovery capability that most consumer NAS solutions lack at this price tier.
- MyQNAPCloud remote access works without port-forwarding configuration — a practical advantage for users without networking expertise.
👎 Cons
- Single Gigabit Ethernet port caps sequential throughput at roughly 115MB/s — no 2.5GbE or link aggregation option on this model.
- ARM Cortex-A55 cannot handle real-time 4K transcoding; streaming must rely on direct-play from pre-encoded files.
- 4GB DDR4 RAM is soldered and non-expandable on the TS-433, limiting future headroom for additional services and Docker containers.
- Four-bay RAID 5 leaves no room for expansion drives without replacing existing disks — the array is full at purchase.
- QTS app ecosystem for virtualization and containerization is constrained by the Cortex-A55's performance ceiling compared to QNAP's x86-based NAS lineup.
Frequently Asked Questions
What is the actual usable storage capacity with the RAID 5 configuration?
With four 4TB drives in RAID 5, you lose one drive's worth of capacity to parity — giving you approximately 12TB of usable storage. That parity data means the array can survive a single drive failure without data loss, after which you replace the failed drive and rebuild.
What processor powers this NAS and does it handle 4K media transcoding?
The TS-433 uses an ARM Cortex-A55 quad-core processor running at 2.0GHz paired with 4GB DDR4 RAM. This is sufficient for file serving, backup operations, and direct-play streaming of pre-transcoded media. On-the-fly 4K transcoding is beyond the capability of this processor — a hardware transcoding NAS in a higher tier is required for that workload.
Can this NAS back up both Windows PCs and Macs simultaneously?
Yes. QNAP's NetBak Replicator software handles Windows backup natively, and the TS-433 supports macOS Time Machine over the network. Both can run concurrently; the 4GB RAM gives adequate headroom for simultaneous backup jobs without degrading file-serving performance.
How does QNAP's snapshot technology protect against ransomware on this unit?
QNAP's storage snapshot feature creates point-in-time recovery points of shared folders. If ransomware encrypts files on a connected PC and those changes propagate to the NAS, you can roll back to a snapshot taken before the infection. Snapshot frequency and retention are configurable in the QTS operating system.
What network interface does the TS-433 provide and what throughput should I expect?
The TS-433 includes a single Gigabit Ethernet port. Maximum theoretical throughput is 125MB/s, with real-world sequential read/write speeds typically in the 100–115MB/s range depending on RAID overhead and client configuration. Link aggregation is not supported on this model.
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